Cement-scraper.



A. HOGHSTRASSER.

CEMENT SORAPBR APPLICATION IILED FEB. 7, 1914.

1,114,986. Patented 0013.27, 1914.

2 BHEBTS-BHBBT 1.

nrromvek A. HOGHSTRASSER.

CEMENT SGRAPBR.

APPLICATION FILED THE. 7, 1914. 1,1 14,986. Patented Oct. 27, 1914.

2 BHEETS-SHEET 2.

Min 5635s: IIVVE/W'OR "rap 1 STATES: PATENT OFFICE.

ARNOLDHOCIISTRASSER, F GEMENTON, PENNSYLVANIA, ASSIGNOR TO WHITEHALLCEMENT MANUFACTURING COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A GOR-PORATION OF PENNSYLVANIA.

cnivrnnr-soaarnn.

Specification of Letters Patent.

Patented Oct. 27, 1914.

To all whom it may concern Be it known that I, ARNOLD Hoons'rRAssnR, acitizen of the United States, residing, at: Oementon, in the county ofLehigh, State of Pennsylvania, haveinvented a new and usefulCement-Scraper, of which the followmg is a specification.

The principal object of the present mvention is to provide an efficient,comparatively inexpensive and reliable cement scraper; to provide formaking the scraper positively go in or up to its work; to provide aconstruction adapted for scraper plates of any width;

to provide a scraper 1n the operation of which the scraper plate isforced through the cement until it takes a bearingon the floor and isthereafter drawn back bringing with it all the cement which the platewill hold; and to provide a scraper wh1oh 1s so largely automatic in itsoperation that 1t can be operated even by unskilled labor.

The invention will be claimed at the end hereof but will be firstdescribed in connectionwith the embodiments of it chosen from. otherembodiments for illustration in the accompanying drawings in which-:-

' Figure 1, is a side viewof ascraper embodying features of theinvention and illustratingthe same as it is drawn in or up to its work.Fig. 2, is a similar view showmg the scraper plate held to the floor andbrlnging out all the cement which 1t Wlll hold. Fig. 3, is a top planview of Fig. 1, andFig. 4, is a similar view illustrating amodification.

In the drawings there isa wheeled carriage having inter-connected 1differential drums. As shown the shaft 1, has fast upon it a drum 2, oflarge diameter and the drums 3, of smaller diameter, and this shaft 1,1s mounted on wheels 4:, arranged inside of the drums 3. There is ascraper frame turnably mounted on the carriage and provided with ascraper plate 5, a scraper guide 6, anoperating cable attachment 7, andan operating cable guide 9, radially spaced in respect to each other.

As shown in the drawing the scraper frame consists of heads arrangedinside of the wheels 4:, and on the shaft 1, and these heads areprovided with projecting arms 10, 11, 12 and 13, spaced radially aroundthe shaft. The arms 12, at their ends carry the scraper plate 5, whichis shown as curved about the shaft 1, as a center and provided on itsoutside with projecting teeth 14, spaced apart. The arms 10, carry attheir ends the rollers 6, which constitute the scraper guide. The arms11, carry the shaft 15, on which the roller constituting anoperatingcable guide 9, is mounted. The arms 13, are connected together by adraft gear 16.

18 and 19, are the drums of a Windlass or hoist, and they are referredto herein as Windlass drumsijTheymay be geared together in such a waythat they turn in opposite directions and are operated by a comthesecables are wound around the drums 3.

22, is an operating cable wound around the Windlass drum 18, passed overthe cable guide 9, and Wound. around the drum 2.

21, is an operating cable wound around the Windlass drum 19, and securedto the draft gear 16.

The mode of operation may be described as follows: To run the scraperinor up to its work the Windlass is run in one direction so that itsdrums turn, for example, as indicated by the arrows in Fig. 1; thus thecable 22, is wound 011 the drum 18, and the cable 21, is unwound fromthe drum 19. The draft on the cable 22, operating on the guide 9, turnsthe roller 6,

. into position for resting on the floor and this draft also unwlnds thecable 22, from a the drum 2, thus turning the drum 2. The turmngmotionof the drum 2, winds up the anchor cables 20, on the drums 3, and

thus the scraper is drawn in to the bin and up to its work. It will beobserved that thepull on the cable 29., is applied to the drum 2, oflarge diameter and is trans mitted by the drums 3, of small diameter tothe anchor cables 20, and in, this way the proper inward motion of thescraper is insured. WVhen the scraper has been thus drawn in, thedirection of motion of the wiudlass and of the drums 18 and 19, isreversed as shown in Fig. 2. This reversal of direction of motion of thedrums plays out the cable 22, and winds up the cable 21. The pull on thecable 91, is

transmitted by the gear 16, to the arms 13, and operates to turn thescraper plate downward through the cement onto the floor. During thisturning motion the guide 9, takes up the slack or some of it- Thecontinued operation in the cable 92. of playing out the cable in thecable 21, causes the carriage with the scraper plate on the floor to bedrawn out along with as much cement'as the plate can hold, it beingunderstood that in the meantime the anchor cables 20, are unwound fromthe drums 3, and the operating cable 22, is wound up on the drum 2.During one operation of the scraper plate through the cement, the teeth1%, loosen the cement ii -preparation for the neat operation of thescraper through the cement.

The construction and mode of operation of the modification shown in Fig.4, are as has been above described except that the construction isintended for use Where a comparatively wide scraper, plate is em ployed.In Fig. 4, Windlass drums are duplicated as shown at 18 and 19 as arealso the drum 2, and guide 9, as shown at 9* and 2 The draft gear 16, isalso duplicated as shown at 16 The operating cables are duplicated asshown at 22 and 21 The purpose of this duplication is to avoidtransmitting the power through too great a length ofv shaft 1*, and thisis accomplished by splitting the drums and their parts, or moreaccurately, by duplicating them so as to apply the power at the ends ofthe shaft instead of the middle.

It will be obvious that modifications may be made in details ofconstruction and arrangement without departing from the spirit of theinvention so that the latter is not to be limited concerning thosematters nor in any way further than the prior state of the art mayrequire.

What I claim is:

1. A cement scraper comprising the combination of a wheeled carriagehaving differential drums and their cables for drawing the device intoworking position, a scraper frame turnably mounted on the carriage andprovided with a scraper plate and a scraper guide and an operating cableand a cable guide radially spaced in respect to each other, andreversely operatand pulling ing Windlass drums for said operating cables, substantially as described. v

2. A cement scraper comprising the combination of a wheeled carriagehaving drums and their cables for drawing the device into workingposition, a scraper frame turnably mounted on the carriage and providedwith a scraper plate and a scraper guide and an operating cable and of ashaft having differential Winding drums, anchor cables cooperating withthe smaller drums, an operating cable cooperating with the larger drum,and wheels on the shaft, substantially as described.

l. In a cement scraper the combination of a wheeled shaft having drums,anchor cables cooperating with some of the drums, an operating cablecooperating with another of the drums, a scraper frame on the shaftprovided with a floor guide and a guide cooperating with said operatingcable, a second operating cable cooperating with the frame, and meansfor playing out one of said cables as the other is wound up,substantially as described.

A cement scraper comprising the combination of a wheeled shaft provided,with drums, anchor cables cooperating with some of said drums, ascraper frame prothe cable guide and withone of: said drums to turn thescraper plate up and draw the scraper in, a second operating, cablecon-' nected with said arm and operating to turn the scraper plate downonto the floor and draw the scraper out, and means for playing one ofsaid operating cables out as the other is drawn in, substantially as ,described. v

In testimony whereof I have hereunto signed my name.

ARNOLD HOCI-ISTRASSER.

Witnesses:

CLIFFORD K. CAssnL, K. M. G"ILLIGAN.-

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of yatents.

Washington, 11. E.

